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[GNUnet-SVN] r25896 - gnunet/src/dns
From: |
gnunet |
Subject: |
[GNUnet-SVN] r25896 - gnunet/src/dns |
Date: |
Fri, 25 Jan 2013 14:03:09 +0100 |
Author: grothoff
Date: 2013-01-25 14:03:08 +0100 (Fri, 25 Jan 2013)
New Revision: 25896
Modified:
gnunet/src/dns/gnunet-service-dns.c
Log:
-check that this is actually a DNS packet
Modified: gnunet/src/dns/gnunet-service-dns.c
===================================================================
--- gnunet/src/dns/gnunet-service-dns.c 2013-01-25 12:11:58 UTC (rev 25895)
+++ gnunet/src/dns/gnunet-service-dns.c 2013-01-25 13:03:08 UTC (rev 25896)
@@ -50,7 +50,12 @@
#include "gnunet_statistics_service.h"
#include "gnunet_tun_lib.h"
+/**
+ * Port number for DNS
+ */
+#define DNS_PORT 53
+
/**
* Generic logging shorthand
*/
@@ -1066,7 +1071,8 @@
ntohs (tun->proto));
return GNUNET_OK;
}
- if (msize <= sizeof (struct GNUNET_TUN_UdpHeader) + sizeof (struct
GNUNET_TUN_DnsHeader))
+ if ( (msize <= sizeof (struct GNUNET_TUN_UdpHeader) + sizeof (struct
GNUNET_TUN_DnsHeader)) ||
+ (DNS_PORT != ntohs (udp->destination_port)) )
{
/* non-DNS packet received on TUN, ignore */
GNUNET_STATISTICS_update (stats,
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